/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		// your code goes here
		int[] arr = {10, 2, -2, -20, 10};
        int k = -10;
        System.out.println(cntSubarrays(arr, k));
	}
	static int cntSubarrays(int[] arr, int k){
		HashMap<Integer,Integer> map = new HashMap<>();
 
		int cnt =0;
 
		int currSum = 0;
		for(int i=0;i<arr.length;i++){
			currSum+=arr[i];
			if(currSum == k) cnt++;
 
			if(map.containsKey(currSum-k)){
				cnt+=map.get(currSum-k);
			}
			map.put(currSum,map.getOrDefault(currSum,0)+1);
		}
		return cnt;
	}
}

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